Pete, 42, and 25-year-old Emily will allegedly say 'I Do' at a lavish ceremony in Exeter today, and she's determined it will be much classier than his first wedding to Katie Price in 2005.
Singer Pete is said to have written a special song for doctor Emily, and he'll serenade her in front of their guests.
A source told The Sun: "Peter wants to make it a really personal affair. The song is very poignant and means a lot to him.
"But he's also planning to perform some more uplifting tracks to get everyone in the mood to party."
Imagine that: Mysterious Girl at a wedding actually performed by Peter Andre!
While Katie, 37, opted for the biggest pink wedding dress we've ever seen, Emily is allegedly going for more of a Kate Middleton look.
And, unlike Pete and Katie's star-studded nuptials, he and Emily reportedly want theirs to be a family affair.
His and Katie's children, son Junior and daughter Princess, will allegedly have roles in the wedding and his groomsmen will be made up of his close friends.